A new series examining the stories behind the unsolved murders of four women across four decades in Northern Ireland. Arlene Arkinson, Lisa Dorrian, Marian Beattie and Inga Maria Hauser are all names that have dominated the headlines in Northern Ireland for all the wrong reasons. Four women whose lives were brutally cut short at the hands of merciless killers.This programme tells the inside story of the murder and disappearance of Lisa Dorrian in 2005, and contains powerful testimony from her sister and victims' rights campaigner, Joanne Dorrian.